But let's start with this. You seem to think we closed down relying on some data we now know to be false data. I don't think anyone clung to any particular piece of data (good or bad) in their decisions to close down. All I know is that it seems to have worked out as planned. We completely shut down and although we still have more deaths than the worst flu (probably since 1918), but we avoided overrunning the hospitals. We've done better than France, Italy and quite a few other countries. And by spreading it out, many of us will catch this after there is a decent treatment protocol.
It seems like the success of this strategy is its undoing.